The Formula's of ItemFind

Here are the formula's of ItemFind.
First off , the % formula ( your chance of finding it ) : Ice Brand ( 0.3% ) with 500 IF.
0.3 + 0.3 * 500 / 100 = 0.3 + 0.3 * 5 = 0.3 + 1.5 = 1.8 % chance of finding it.

And now the '' average day '' formula , again we will use Ice Brand ( 0.3% ) with 500 IF. :
0.3 * 6 = 1.8
100 / 1.8 = 55,555555555555555555555555555556
55,555555555555555555555555555556 / 26,66666 = 2,1 days ( scaled down )

Now if you want to do it yourself follow these things :
The % formula. :
realChance = baseChance + baseChance * IF / 100.

And now the '' average day '' formula. :
drop rate * ((IF / 100) + 1) = real drop rate

100 / real drop rate = average amount of tries

average amount of tries / 26,66666 = average amount of days using all energy.